It sounded like a winning proposition -- free money -- for Internet access providers. By tracking their subscribers' personal Web surfing habits, they could help deliver ads targeted to the consumers' interests, and claim a share of the burgeoning online advertising market dominated by Internet search companies. But those efforts to sniff out consumers' interests are running into the ditch.

It sounded like a winning proposition -- free money -- for Internet access providers. By tracking their subscribers' personal Web surfing habits, they could help deliver ads targeted to the consumers' interests, and claim a share of the burgeoning online advertising market dominated by Internet search companies. But those efforts to sniff out consumers' interests are running into the ditch.

The economy pulled out of a dangerous rough patch in the spring, thanks largely to strong exports, but the rebound isn't expected to last. Economic slowdowns overseas could make exports tail off just as Americans are hunkering down after the bracing impact of rebate checks wanes, plunging the country into another rut later this year.

The economy pulled out of a dangerous rough patch in the spring, thanks largely to strong exports, but the rebound isn't expected to last. Economic slowdowns overseas could make exports tail off just as Americans are hunkering down after the bracing impact of rebate checks wanes, plunging the country into another rut later this year.

A congressional committee wants the nation's largest telecommunications and Internet companies to explain whether they target online advertising based on consumers' search queries and Web surfing habits.